Surrogate Marker Of Subclinical Atherosclerosis Research Articles

A study of carotid intima media thickness in patients with rheumatoid arthritis and its correlation with acute phase reactants and disease activity

Introduction: There is increased risk of cardiovascular morbidity and mortality in patients of rheumatoid arthritis (RA) due to accelerated atherosclerosis. In this study we measured Carotid artery intima media thickness (CIMT) as a surrogate marker for subclinical atherosclerosis in RA patients without pre-existing cardiovascular disease. This study also analyzed the correlation between CIMT, disease duration, Simplified Disease Activity Index (SDAI) and acute phase reactants. Methods: A cross-sectional study was conducted on 90 patients divided into two groups of 45 patients of RA and another 45 control subjects. Subjects with RA and age and sex matched healthy controls were included in the study without pre-existing CV risk factors. Complete clinical evaluation, hematological and biochemical profile done. ESR, CRP and platelet count were used as markers of acute phase reactants. All the RA patients included in the study were evaluated for their disease activity using Simplified Disease Activity Index (SDAI). All the subjects including the controls evaluated for carotid intima media thickness by using carotid ultrasonography. CIMT measured in common carotid artery bilaterally by examining throughout common carotid artery up to 2 cm proximal to bifurcation. CIMT measurement taken at the site of greatest thickness. All measurements taken in diastole, measured in phase when lumen diameter is at its smallest and IMT at its largest. Mean value of 6 readings (3 from each side) taken as final CIMT for evaluation. B mode (linear probe) USG was used to determine carotid IMT. Results: 45 cases and similar control subjects included in the study with mean age (SD) as 45.07 (14.81) years. We found female preponderance with 37 females out of 45 cases. Mean (SD) disease duration in male subjects was 5.38(2.40) years while in females was 5.09 (2.78) years. CRP was found to be significantly increased in cases group with mean (SD) of 5.75(8.85) mg/dl. ESR significantly raised to 35.22(13.55) mm/hour in cases group compared to control group where it was 16.16(5.71) mm/hr. Mean (SD) platelets (x10³/mm³) were 229.24(69.80) in cases while controls had 290.33(83.85), so platelets correlation with disease could not be established. CIMT was significantly raised in cases group. Mean (SD) CIMT in cases was 0.95(1.06) mm whereas in control group it was 0.60(0.16) mm with p value of 0.002. Moderate positive correlation was found between CIMT (mm) and SDAI and this correlation was statistically significant with p=0.001. For every 1 unit increase in CIMT, the SDAI increases by 2.92 units. A strong positive correlation between CIMT (mm) and Disease Duration (Years), and this correlation was statistically significant (rho = 0.9, p = <0.001). For every 1 unit increase in CIMT (mm), the Disease Duration (Years) increases by 1.26 units. Conversely, for every 1 unit increase in Disease Duration (Years), the CIMT (mm) increases by 0.19 units. Conclusion: A strong correlation was observed between CIMT and disease duration in rheumatoid arthritis. Hence, CIMT can be a useful surrogate marker for detecting atherosclerosis in patients with RA. In view of the relation to duration of disease, established RA patients should regularly be screened to identify the evidence of atherosclerosis and manage it earlier. Prevention of cardiovascular disease in RA requires an integrated approach encompassing cardiovascular risk factors screening and management, effective and sustained control of RA disease activity, high index of suspicion and prompt investigation of suspected cardiac disease.

Abstract 11631: Subclinical Atherosclerosis Risk of Isolated Diastolic Hypertension in Young Adults

Aim: Hypertension among young adults is common. Little is known regarding subclinical atherosclerosis development associated with isolated diastolic hypertension (IDH) among young adults. This study aimed to assess the relationship between IDH and some surrogate markers of subclinical atherosclerosis in young adults. Methods: From January 2018 to December 2022, we consecutively enrolled 576 IDH individuals (aged 18 to 39 years) without cardiovascular complications and 576 normotensive subjects matched for age, sex and body mass index (BMI). Each participant underwent anthropometric measurements, serum biochemistry evaluation, 24-h ambulatory blood pressure (BP) monitoring, echocardiography, and carotid ultrasonography. Surrogate markers of subclinical atherosclerosis included carotid intima-media thickness (cIMT), ankle-brachial index (ABI), coronary calcification, and biochemical parameters. IDH was defined as diastolic BP ≥ 90 mmHg and systolic BP < 140 mmHg. Results: Individuals with IDH had higher cIMT, greater ABI, and a higher frequency of coronary calcification and albuminuria (all P < 0.05). IDH was correlated with cIMT, ABI, coronary calcification, and albuminuria (Pearson’s correlation coefficients: 0.471, 0.365, 0.411, and 0.268, respectively; all P < 0.05). Compared with normotensive individuals, IDH was related to odds ratios of 2.09 (95% confidence interval [CI], 1.21-3.16), 2.72 (95% CI, 1.52-4.56), 1.78 (95% CI,1.15-2.89), and 1.26 (95% CI, 0.48-2.05) for cIMT, ABI, coronary calcification, and albuminuria, respectively. Conclusion: Our findings emphasize the importance of assessing IDH in young adults to identify high-risk individuals for preventing subclinical atherosclerosis complications.

The Impact of Treatment with IL-17/IL-23 Inhibitors on Subclinical Atherosclerosis in Patients with Plaque Psoriasis and/or Psoriatic Arthritis: A Systematic Review.

Accumulating evidence considers psoriasis a systemic inflammatory disorder that is associated with comorbidities such as psoriatic arthritis, cardiovascular disease, and metabolic syndrome. Although the precise pathogenetic links between psoriasis and atherosclerosis warrants further investigation, it is believed that chronic systemic inflammation along with the T helper (Th)-1 and Th17 polarization are associated with endothelial dysfunction and subsequent acceleration of atherosclerosis. Considering the above, several studies have evaluated if optimal control of the inflammation in psoriasis by inhibiting interleukins targeting the Interleukin (IL)-23/Th17 axis could subsequently reduce the atherosclerotic process during anti-psoriatic treatment by using a variety of surrogate markers of subclinical atherosclerosis. This systematic review summarizes current knowledge on the pathogenetic mechanisms and diagnostic evaluation of atherosclerosis in the context of psoriasis and provides a systematic review of the literature on the impact of treatment with biologics targeting the IL-23/Th17 axis on subclinical atherosclerosis in patients with plaque psoriasis and/or psoriatic arthritis.

Osteoprotegerin and MTHFR gene variations in rheumatoid arthritis: association with disease susceptibility and markers of subclinical atherosclerosis

We aimed to explore whether the rs2073618 variant (G1181C) of the osteoprotegerin (OPG) gene and the methylenetetrahydrofolate reductase (MTHFR) rs1801131 (A1298AC) and rs1801133 (C677T) gene polymorphisms contribute to rheumatoid arthritis (RA) susceptibility and RA related subclinical atherosclerosis. Overall 283 RA patients and 595 healthy controls (HC) were genotyped for common variants of the OPG and MTHFR genes using PCR based assays. Clinical and laboratory parameters were recorded following thorough chart review. Surrogate markers of subclinical atherosclerosis (Carotid/Femoral intima media thickness/plaque formation) along with traditional risk factors for atherosclerosis were assessed in all RA patients and 280HC. Increased prevalence of the CC genotype of the rs2073618 variant was detected in RA patients vs HC (42.4% vs. 33%, p-value: 0.04). RA patients with high serum titers of rheumatoid factor (RF) or anti-cyclic citrullinated peptide (CCP) antibodies displayed increased prevalence of the CC genotype of the rs2073618 variant of the OPG gene compared to HC (48.6% and 47.5 vs 33.3%, p-values: 0.0029and 0.0077 respectively). Of interest, this genotype turned to be associated with higher carotid IMT scores (0.872 ± 0.264 vs 0.816 ± 0.284, p-value: 0.01) and marginally with higher rates of carotid plaque formation (66% vs 54.1%, p = 0.06). The MTHFR 1298CC genotype was more prevalent only in the anti-CCP positive group compared to HC, with no associations detected with markers of subclinical atherosclerosis, following adjustment for traditional cardiovascular (CVD) risk factors. Reduced rates of carotid/femoral plaque formation were detected among RA patients harboring the MTHFR TT genotype (52.4 vs 72.7, p-value: 0.009, respectively). This association remained significant following adjustment for classical CVD risk factors (OR [95% CI 0.364 [0.173–0.765], p-value: 0.008). Genetic variations of the osteoprotegerin and MTHFR genes seem to increase susceptibility for seropositive RA and potentially contribute to subclinical atherosclerosis linked to RA. Larger studies are needed to confirm these findings.

Cardiometabolic outcomes of women exposed to hyperglycaemia first detected in pregnancy at 3-6 years post-partum in an urban South African setting.

BackgroundHyperglycaemia first detected during pregnancy(HFDP) has far-reaching maternal consequences beyond the pregnancy. Our study evaluated the cardiometabolic outcomes in women with prior HFDP versus women without HFDP 3–6 years post-partum in urban South Africa.Design and methodsA prospective cohort study was performed of 103 black African women with prior HFDP and 101 without HFDP, 3–6 years post-partum at Chris Hani Baragwanath Academic Hospital, Soweto. Index pregnancy data was obtained from medical records. Post-partum, participants were re-evaluated for anthropometric measurements, body composition utilizing dual energy X-ray absorptiometry(DXA) and biochemical analysis (two-hour 75gm OGTT fasting insulin, lipids, creatinine levels and glucose levels). Cardiovascular risk was assessed by Framingham risk score(FRS). Carotid intima media thickness(cIMT) was used as a surrogate marker for subclinical atherosclerosis. Factors associated with progression to cardiometabolic outcomes were assessed using multivariable logistic and linear regression models.ResultsForty-six(45.1%) HFDP women progressed to diabetes compared to 5(4.9%) in non HFDP group(p<0.001); only 20(43.4%) were aware of their diabetic status in the whole group. The odds(OR, 95% confidence interval(CI)) of progressing to type 2 diabetes(T2DM) and metabolic syndrome(MetS) after correcting for confounders in the HFDP group was 10.5(95% CI 3.7–29.5) and 6.3(95%CI 2.2–18.1), respectively. All visceral fat indices were found to be significantly higher in the HFDP group after adjusting for baseline body mass index. Ten-year estimated cardiovascular risk(FRS) and mean cIMT was statistically higher in the HFDP group(8.46 IQR 4.9–14.4; 0.48 mm IQR 0.44–0.53 respectively) compared to the non-HFDP group(3.48 IQR 2.1–5.7; 0.46mm IQR 0.42–0.50) respectively and this remained significant for FRS but was attenuated for cIMT after correcting for confounders. HIV did not play a role in progression to any of these outcomes.ConclusionWomen with a history of HFDP have a higher risk of cardiometabolic conditions within 6 years post-partum in an urban sub-Saharan African setting.

Comparison of Cardio-metabolic Profile in NAFLD Patients with and Without Advanced Fibrosis

Background: Advanced fibrosis is independently associated with cardiovascular organ damage. Metabolic syndrome (MetS) contributes to accelerated atherosclerosis in Non-alcoholic fatty liver disease(NAFLD). Carotid Intima-media thickness(CIMT) is a surrogate marker for subclinical atherosclerosis.

Assessment of plasma ceramides as predictor for subclinical atherosclerosis

Background and aimsCeramides have been identified as novel biomarkers for cardiovascular disease (CVD) related events and mortality but their role in etiology of subclinical atherosclerosis is unknown. We aimed to assess association between plasma ceramides and carotid intima-media thickness (CIMT) and evaluate predictive value of the ceramides for high CIMT over traditional CVD risk factors. MethodsAssociation between plasma ceramides and CIMT in the Young Finns Study participants was analyzed with CIMT as outcome and ceramides along with traditional risk factors as predictors with regression model. Predictive value of the ceramides and related coronary event risk test (CERT) score for high CIMT as surrogate marker of subclinical atherosclerosis was assessed by comparing logistic regression-based prediction models including, i) traditional risk factors and ceramides, ii) traditional risk factors and CERT score, iii) age, sex and ceramides or alternatively CERT score with a reference model including only traditional risk factors. The prediction models were fitted to training data (70% data) and tested on test data (30% data). The predictive models were assessed with area under the receiver operating curve (AUC). The variance of AUC was estimated by repeating the model fitting and testing for 1000 bootstraps of the original data. ResultsPredictive models with plasma ceramides or alternatively with CERT score in addition to age and sex variables were able to predict high CIMT with AUC 0.726 and 0.720 respectively. However, the ceramides and CERT score did not have statistically significant added predictive value for high CIMT over traditional risk factors. ConclusionsThe new systemic biomarkers, high-risk plasma ceramides and CERT score, showed promising predictive performance for high CIMT with only age and sex as additional variables. This may help in predicting subclinical atherosclerosis for primary prevention.

Subclinical Atherosclerosis in Psoriatic Patients: Relation with Vitamin D

Abstract Background Psoriasis is a chronic, inflammatory disease that mainly affects skin and nails. Approximately 13%-25% of Psoriasis patients develop Psoriatic arthritis (PsA). Psoriasis and PsA are strongly associated with numerous comorbid diseases and among them, cardiovascular diseases are of particular importance. Low levels of serum vitamin D are associated with increasing risk of metabolic diseases and cardiovascular diseases. Vitamin D deficiency is observed in numerous chronic systemic inflammatory diseases including psoriasis. Carotid intima-media thickness (CIMT) is a marker of arterial vascular disease used to predict a future vascular event. It can serve as a surrogate marker for subclinical atherosclerosis and cardiovascular diseases. Coronary artery calcification score (CACS) is a non-invasive and highly reliable method to measure coronary atherosclerosis through non-contrast cardiac CT. Objective To detect subclinical atherosclerosis and study its relation with serum levels of 25hydroxyvitamin D in psoriatic patients with and without arthritis. Patients and Methods This study was carried out on 25 Egyptian psoriatic patients and 25 healthy individuals matched as regarding age, sex and BMI as a control group. Patients were classified into 2 groups; Group I: 13 patients with PsA and Group II: 12 patients with psoriatic skin lesion without any arthritic manifestations. All patients were subjected to full medical history taking, thorough clinical examination. Basic laboratory investigations in addition to assessment of serum levels of 25-OH vitamin D were done to all patients and control. carotid duplex for measurement of CIMT in addition to measurement of CACS using coronary CT. Results Patients with PsA had lower values of vitamin D than psoriatic patients and controls despite being statistically insignificant (median; 5, 5.5 &amp; 11). CIMT and CACS were statistically higher among PsA patients (CIMT mean; 0.57, 0.52 &amp; 0.44) and (CACS median; 53, 1.5 &amp; 0) respectively. Vitamin D was found to be negatively well correlated with PASI, ALT, AST, serum creatinine and CACS in psoriatic patients. A significant relation between higher PASI and low vitamin D levels in psoriatic patients. CIMT was significantly positively correlated with age, BMI, LEI, ALT, AST, SUA, cholesterol and CACS in psoriatic patients, while CACS was positively correlated with age, ALT, SUA and cholesterol. Conclusion Psoriatic patients especially those with PsA had lower values of vitamin D than controls despite being statistically insignificant. They also suffered from increased risk of CVDs and subclinical atherosclerosis due to increased burden of inflammation and lack of physical activity. Vitamin D was negatively correlated with CACS in psoriatic patients in addition to a strong positive correlation between CIMT and CACS among them.

Cardiometabolic Outcomes of Women Exposed to Hyperglycaemia First Detected in Pregnancy at 3–6 Years Post-Partum in an Urban South African Setting

Objective: Comparison of cardiometabolic outcomes in women exposed to hyperglycaemia first detected in pregnancy (HFDP) and a control group 3–6 years post-partum in urban South Africa. Design and Methods: A comparative study was performed of 103 women exposed to HFDP and 101 not exposed to HFDP 3–6 years post-partum at Chris Hani Baragwanath Academic Hospital, Soweto. Index pregnancy data were obtained from medical records. Post-partum, participants were re-evaluated for biochemical analysis (two-hour 75gm OGTT, fasting insulin, lipids creatinine and glucose levels). Cardiovascular risk was assessed by estimation of the Framingham risk score (FRS). Carotid intima media thickness (CIMT) was used as a surrogate marker for subclinical atherosclerosis. Factors associated with progression to these cardiometabolic outcomes were assessed using multivariable logistic and linear regression models. Results: 46 (45.1%) HFDP-exposed women progressed to diabetes compared to 5 (5.0%) women in the control group (p<0.001); only 20 (43.4%) of the HFDP group were aware of their diabetic status. Adjusted odds ratio (aOR, 95% confidence interval (CI)) of progressing to type 2 diabetes was 11.0 (3.3–36.2). Both 10-year estimated cardiovascular risk (FRS) and mean CIMT were statistically higher in the HFDP-exposed group (8.46 IQR 4.9–14.4; 0.48 mm IQR 0.44-0,53, respectively) compared to the control group (3.48 IQR 2.1–5.7; 0.46mm IQR 0.42–0.50 respectively) though mostly driven by age, systolic blood pressure and diabetes. Conclusion: African women with a history of HFDP have an increased risk of cardiometabolic conditions within 6 years post-partum in an urban sub-Saharan African setting.

Carotid intima-media thickness and epicardial fat thickness predict precoronary artery disease status in psoriasis.

Carotid intima-media thickness test is a surrogate marker of subclinical atherosclerosis. Epicardial fat thickness is an early marker of coronary artery disease. Several studies have noted that psoriasis patients have an increased risk of coronary artery disease. In the present study, we attempted to see any variation in carotid intima-media thickness and epicardial fat thickness in psoriasis patients when compared to controls. 1) To determine the carotid intima-media thickness and epicardial fat thickness in psoriatic patients and healthy controls. 2) To evaluate the association between carotid intima-media thickness and epicardial fat thickness in psoriasis patients. A hospital-based study with 100 subjects (50 with psoriasis and 50 healthy controls) was conducted in the Dermatology Outpatient Department of Justice KS Hegde Charitable Hospital, a unit of KS Hegde Medical Academy affiliated to NITTE (Deemed to be University) Mangaluru. A detailed history and examination including body mass index, psoriasis area and severity index were done. Carotid ultrasound was done to measure carotid intima-media thickness and transthoracic echocardiography was done to assess epicardial fat thickness in both cases and controls. Independent sample t-test, Pearson rank correlation (r) coefficient were used for statistical analysis. P-value <0.05 was considered statistically significant. IBM Statistical Package for the Social Sciences version 22 Armonk, NY: IBM Corp was used for statistical analysis. Mean carotid intima-media thickness in the right carotid ([0.51 ± 0.1mm vs 0.47 ± 0.1 mm] [P = 0.038]) and left carotid ([0.53 ± 0.12 mm vs 0.48 ± 0.1 mm] [P = 0.041]) were significantly increased in psoriasis patients than in controls. Mean epicardial fat thickness was significantly increased ([1.76 ± 0.66 mm vs. 1.49 ± 0.47 mm] ([P = 0.020]) in patients with psoriasis when compared with the controls. Epicardial fat thickness was positively correlated with carotid intima-media thickness in patients with psoriasis. The cross-sectional design of the study, smoking among study subjects, inter and intraobserver variability of measurement of epicardial fat thickness and carotid intima-media thickness. Carotid intima-media thickness and epicardial fat thickness were increased in psoriasis patients when compared with healthy controls. Epicardial fat thickness was positively correlated with carotid intima-media thickness in cases.

Surrogate Markers of Subclinical Atherosclerosis and Its Associated Factors in Patients with β-Thalassemia Major

β-Thalassemia major (β-TM) is a severe genetic hemoglobin (Hb) disorder with cardiovascular complications such as atherosclerosis due to transfusion-dependent iron overload. We aimed to determine the associated factors with surrogate markers of subclinical atherosclerosis in these patients. Sixty subjects with β-TM referred to the Thalassemia Clinic of the Iranian Blood Transfusion Organization (IBTO) were included in our study. The blood samples were collected for laboratory measurements. The carotid intima-media thickness (CIMT), was measured by ultrasonography, and ankle-brachial index (ABI) was calculated. The multivariate linear analysis was performed to determine the appropriate indicators of subclinical atherosclerosis in β-TM. There was no significant difference in baseline characteristics between the study groups. In multivariate linear analysis, age and systolic blood pressure (SBP) were negatively associated with inverse-transformed CIMT [unstandardized β coefficient (B): −0.024, 95% confidence interval (95% CI): −0.032- −0.010, p < 0.001; B: −0.009, 95% CI: −0.017- −0.001, p 0.031, respectively]. There was also a significant correlation between the serum level of high-density lipoprotein cholesterol (HDL-C) and insulin with higher ABI, after adjustment for confounding variables (B: 0.003; 95% CI: 0.000–0.005; p = 0.030, and B: 0.004, 95% CI: 0.000–0.009, p = 0.037, respectively). Our results show that advancing age and increased SBP, HDL-C and insulin, associated with higher CIMT or ABI, are appropriate indicators of subclinical atherosclerosis in β-TM patients.

Intercellular adhesion molecule-1 is a surrogate biomarker for subclinical atherosclerosis in Type 2 diabetes mellitus.

Aim: We aimed to investigate biomarkers of inflammation, oxidative stress as surrogate markers of subclinical atherosclerosis in patients with Type 2 diabetes mellitus (T2DM). Materials& methods: Subjects were grouped based on carotid intima media thickness (CIMT). Group 1: healthy controls (CIMT <0.57mm); Group 2: T2DM without subclinical atherosclerosis (CIMT <0.57mm); Group 3: T2DM with subclinical atherosclerosis (CIMT ≥0.57mm). Results: Significantly higher MDA, Hs-CRP, Ox-LDL, PTX-3, IL-6, ICAM-1 and lower FRAP, IL-10 levels in T2DM groups compared with controls (p = 0.001). Changes were more significant in Group 3 compared with Group 2. ICAM-1 had the highest sensitivity and specificity at a cut-off value of >40.34ng/mlcompared with Ox-LDL and PTX-3 (p<0.001). Conclusion: ICAM can be considered as an alternate surrogate biomarker of CIMT.

Carotid Intima-Media Thickness and the Risk of Sudden Cardiac Death: The ARIC Study and the CHS.

BackgroundSudden cardiac death (SCD) is associated with severe coronary heart disease in the great majority of cases. Whether carotid intima‐media thickness (C‐IMT), a known surrogate marker of subclinical atherosclerosis, is associated with risk of SCD in a general population remains unknown. The objective of this study was to investigate the association between C‐IMT and risk of SCD.Methods and ResultsWe examined a total of 20 862 participants: 15 307 participants of the ARIC (Atherosclerosis Risk in Communities) study and 5555 participants of the CHS (Cardiovascular Health Study). C‐IMT and common carotid artery intima‐media thickness was measured at baseline by ultrasound. Presence of plaque was judged by trained readers. Over a median of 23.5 years of follow‐up, 569 participants had SCD (1.81 cases per 1000 person‐years) in the ARIC study. Mean C‐IMT and common carotid artery intima‐media thickness were associated with risk of SCD after adjustment for traditional risk factors and time‐varying adjustors: hazard ratios (HRs) with 95% CIs for fourth versus first quartile were 1.64 (1.15–2.63) and 1.49 (1.05–2.11), respectively. In CHS, 302 participants developed SCD (4.64 cases per 1000 person‐years) over 13.1 years. Maximum C‐IMT was associated with risk of SCD after adjustment: HR (95% CI) for fourth versus first quartile was 1.75 (1.22–2.51). Presence of plaque was associated with 35% increased risk of SCD: HR (95% CI) of 1.37 (1.13–1.67) in the ARIC study and 1.32 (1.04–1.68) in CHS.ConclusionsC‐IMT was associated with risk of SCD in 2 biracial community‐based cohorts. C‐IMT may be used as a marker of SCD risk and potentially to initiate early therapeutic interventions to mitigate the risk.

Subclinical Atherosclerosis Markers of Carotid Intima-Media Thickness, Carotid Plaques, Carotid Stenosis, and Mortality in Community-Dwelling Adults.

Carotid intima–media thickness (IMT), plaque, and stenosis are widely used as early surrogate markers of subclinical atherosclerosis and strong predictors of future deaths and cardiovascular events. Albuminuria is an indicator of generalized endothelial dysfunction that speeds up atherosclerosis. However, previous studies reporting these associations cannot rule out the confounding effect of albuminuria. We aimed to examine the independent and joint relationships between IMT markers and 10-year mortality in community-dwelling Taiwanese adults. This work was a community-based prospective cohort study consisting of 2956 adults aged at least 30 years recruited in 2007 and followed up through 2019. Cox proportional hazard regression models were used to examine associations of these subclinical atherosclerosis markers with mortality. During an average of 9.41 years of follow up, 242 deaths occurred. The mortality rate was 8.70 per 1000 person-years. Compared with those with carotid IMT less than 1.0 mm, persons with severely increased carotid IMT (≥2.0 mm) had an increased risk for death (hazard ratio (HR): 1.79; 95% confidence interval (CI): 1.07, 3.00). Compared with those without carotid plaque, persons with carotid plaque were more likely to have an increased risk for death (1.65; 1.21–2.32). Compared with those with carotid stenosis less than 25%, persons with carotid stenosis of 25–36% had a significant increased risk for death (1.57; 1.12–2.22). Considering these three IMT markers along with the traditional risk factors (c-statistic: 0.85) significantly increased their predictive ability of mortality compared with any individual variable’s predictive ability (all p-values < 0.001 for comparisons of c-statistic values). Carotid IMT measures, including IMT thickness, carotid plaque, and carotid stenosis were significant independent predictors of mortality. Our study supports evidence of blood pressure-related media thickening markers to assess future mortality risks in Chinese adults of general population.

RELATION BETWEEN CARDIO-ANKLE VASCULAR INDEX AND CORONARY ARTERY CALCIFICATION OR STENOSIS IN METABOLIC SYNDROME SUBJECTS

Arterial stiffness assessed by cardio-ankle vascular index (CAVI) is commonly used as a surrogate marker of subclinical atherosclerosis. The aim of study is to demonstrate the association of CAVI and coronary artery calcification (CAC) or coronary stenosis in the asymptomatic metabolic syndrome (MS

Post-exercise Response of Arterial Parameters for Arterial Health Assessment Using a Microfluidic Tactile Sensor and Vibration-Model-Based Analysis: A Proof-of-Concept Study.

Arterial stiffness and endothelial function are two established surrogate markers of subclinical atherosclerosis and are quantified by three arterial parameters: elasticity, viscosity and radius of the arterial wall. Yet, the current methods for their assessment are unsuitable for routine use. Post-exercise response of the cardiovascular (CV) system serves as a more sensitive detection of subclinical arterial abnormalities that are not apparent at-rest. The objective of this study is to propose a novel method that can measure post-exercise response of arterial parameters and is also suitable for routine use. A microfluidic tactile sensor with a location-insensitive configuration was used for arterial pulse signal measurements on six asymptomatic male subjects, offering measurement reliability, ease use by a layperson, and affordability. By treating the arterial pulse signal as a vibration signal of the arterial wall, vibration-model-based analysis of only one measured pulse signal with no calibration was conducted for simultaneous estimation of three arterial parameters. Exercise-intensity-normalized percent changes in arterial parameters were utilized to remove the influence of variation in exercise intensity on post-exercise response, and then their measured values were compared for difference in post-exercise response between the subjects. One subject who was obese, on subject who had insomnia, and the oldest subject in the study demonstrated differences in post-exercise response at the radial artery (RA), as compared with the three subjects free of those three factors. Despite a lack of statistical significance, the observed difference at the RA between subjects was supported by (i) their consistency with the related findings in the literature, and (ii) their consistency with the measured values at the carotid artery (CA) and superficial temporal artery (STA) and the anatomical difference between the three arteries. The proposed method has the potential of offering an affordable and convenient diagnosis tool for routine arterial health assessment.

Subclinical atherosclerosis due to increase of plasma aldosterone concentrations in essential hypertensive individuals.

The adrenal mineralocorticoid system plays a key role in cardiovascular, metabolic and renal damage. This study aimed to assess the relationship between plasma aldosterone concentration (PAC) and some surrogate markers of subclinical atherosclerosis, such as carotid intima-media thickness (cIMT), ankle-brachial index (ABI) and biochemical parameters in patients with essential hypertension. From January 2014 to December 2017, we consecutively enrolled 804 essential hypertensive patients (407 men and 397 women, mean age 50 ± 14 years) without cardiovascular complications, distinguishing patients in quartiles according to PAC. Compared with the first quartile, the highest PAC quartile was associated with the highest levels of serum uric acid (SUA) (5.3 ± 1.3 vs. 5.0 ± 1.0 mg/dl; P = 0.01), triglycerides (117.5 ± 15.7 vs. 106.8 ± 10.5 mg/dl; P < 0.05), 24-h urinary albumin excretion (UAE) (38.8 ± vs. 7.6 ± mg/24 h; P < 0.05), cIMT (0.87 ± 0.22 vs. 0.80 ± 0.21 mm; P = 0.001) and increased prevalence of carotid plaques (26 vs. 16%; P < 0.005). Moreover, we found that in patients with PAC more than 150 pg/ml, the ABI was significantly lower than those with PAC < 150 pg/ml (1.01 ± 0.09 vs. 1.10 ± 0.09; P < 0.022). PAC was also found to be an independent predictor of the presence of carotid plaques and pathological ABI (<0.9) in essential hypertensive individuals. Our results revealed that higher PAC values are strongly associated with some metabolic variables, as triglycerides, UAE, cIMT, worse ABI and major prevalence of carotid plaques that, together with elevated blood pressure values, are strictly correlated with higher risk of atherosclerosis and cardiovascular complications.

SUBCLINICAL ATHEROSCLEROSIS, SERUM URIC ACID AND PLASMA ALDOSTERONE IN HYPERTENSIVE ADULTS

Objective: aldosterone has long been classically considered to play a central role in the regulation of electrolyte and fluid volume and the maintenance of blood pressure (BP) homeostasis. Moreover, the aldosterone/mineralocorticoid system plays a key role in cardiovascular, metabolic and renal damage. This study aimed to assess the relationship between plasma aldosterone concentration (PAC) and some surrogate markers of subclinical atherosclerosis, such as carotid intima-media thickness (cIMT), ankle-brachial index (ABI) and biochemical parameters (i. e. serum uric acid – SUA, 24-h urinary albumin excretion - UAE) in subjects with essential hypertension (EH). Design and method: from January 2014 to December 2017 we consecutively enrolled 804 EH patients (407 males and 397 females, mean age 50 ± 14.5 yrs) without evident cardiovascular complications. Patients were divided in quartiles according to PAC levels. Results: Compared to the first quartile, the highest PAC quartile was associated with the highest levels of SUA (5.3 ± 1.34 vs 5.0 ± 1 mg/dl; p = 0.01) triglycerides (117.5 ± 15.7 vs 106.8 ± 10.5 mg/dl; p < 0.05), UAE (38.8 vs 17.6 mg/24ore; p < 0.05) and cIMT (0.87 ± 0.22 mm vs 0.8 ± 0.21 mm; p = 0.001). Patients of the fourth quartile also exhibited increased prevalence of carotid plaques, compared to the first quartile (26% vs. 16%; p < 0.005). Moreover, we found that in patients with PAC >160 pg/ml ABI was significantly lower compared to those with PAC < 160 pg/ml (1.01 ± 0.09 vs 1.1 ± 0.09; p < 0.022). Binary logistic regression analysis showed that PAC was an independent predictor of the presence of carotid plaques and pathological ABI (< 0.9) in the population examined. Conclusions: These findings suggest that higher values of PAC are strongly associated with higher values of SUA, triglycerides, UAE, cIMT, worse ABI and major prevalence of carotid plaques that, together with elevated BP values, are strictly correlated with higher risk of atherosclerosis and cardiovascular complications.

Assessment of subclinical atherosclerotic cardiovascular disease in patients with ankylosing spondylitis.

Objective:The aim of the present study was to compare patients with ankylosing spondylitis (AS) with healthy controls with respect to subclinical atherosclerotic cardiovascular disease (CVD).Methods:A total of 44 patients with AS with no history of CVD, diabetes mellitus, hypertension, chronic kidney disease, and lipid-lowering drug use were compared with 40 age- and sex-matched healthy controls with respect to carotid intima-media thickness (CIMT) and pulse wave velocity (PWV), which are surrogate markers of subclinical atherosclerosis. Correlation analysis was also performed to examine the association between surrogate markers and disease activity with inflammation [Ankylosing spondylitis disease activity score with C-reactive protein (ASDAS-CRP)].Results:In addition to age and sex, both groups were comparable with respect to cigarette smoking, body mass index, and high-density lipoprotein cholesterol (p=0.425, p=0.325, and p=0.103, respectively). The level of total cholesterol was significantly lower in patients with AS (p=0.002). Nonsteroidal anti-inflammatory drug and tumor necrosis factor alpha inhibitor use ratios in patients with AS were 79.5% and 65.9%, respectively. There was no significant difference between both groups regarding PWV and CIMT (p=0.788 and p=0.253, respectively). In patients with AS, there was a significant correlation between ASDAS-CRP and CIMT (r=0.315, p=0.038), but the correlation between ASDAS-CRP and PWV was not significant (r=−0.183, p=0.234).Conclusion:The results of the present study could not provide sufficient evidence whether disease activity with inflammation caused subclinical atherosclerotic CVD in patients with AS without overt CVD. The increased atherosclerotic CVD risk is most probably multifactorial in patients with AS, but the extent of the contribution of disease activity with inflammation to increased atherosclerosis is controversial.

Ultrasonographic assessment of subclinical atherosclerosis in smokers aged &lt;40 years

Introduction: Cigarette smoking is a well-known risk factor for developing coronary artery disease. Ultrasonography is an excellent tool which is noninvasive and cheap, might be utilized as a cost effective method to screen the high risk population. There are many surrogate markers of atherosclerosis which can be assessed with the help of ultrasonography such as carotid intima media thickness (CIMT), Flow mediated vasodilatation (FMD) and Ankle brachial index (ABI). Aim of our study was to assess atherosclerotic risk markers non invasively using ultrasonography as a tool in smokers less than forty years. Materials and Methods: All subjects amongst patient's attendants or hospital staff aged more than 18 years and less than 40 years with history of smoking were enrolled as cases and age, gender and BMI matched non smokers were defined as controls. Anthropometric and biochemical parameters were recorded and CIMT, FMD and ABI were assessed. Results: Amongst smokers, average duration of smoking was 8.5±2.5 years. They had higher systolic and diastolic blood pressures than controls. The smokers had higher total cholesterol, triglycerides and LDL. Smokers presented with higher values of CIMT and lower values of FMD and ABI than non-smoker controls. Conclusion: Subclinical markers are present even in young smokers who are less than forty years. Ultrasonography is a good modality to assess the surrogate markers of subclinical atherosclerosis.